Sans and Papyrus both dreamed of going to the surface as they never had the chance to but now it was their time to find out as they decided to help Alphys in her Experiment to reach the surface.The experiment successfully sends the skeleton brothers to the surface but now they must help 7 humans to stop magic from corrupting people and face some of their familiar foes and enemies and while figure out how to get home.

(I believe what Equestrian magic does to people is corrupt them ok)